# Dr. Sudoku Review

Dr. Sudoku has everything to do with sudoku puzzles and nothing to do with doctors, be they of the medical or mad scientist persuasion. In case you are more familiar with mad scientists than you are with sudoku puzzles, let me start with an explanation of how the puzzles work. Those of you who are whizzes of the number grids should feel free to skip ahead a paragraph.

It's all a numbers game. |

Sudoku is normally a pencil and paper type of puzzle, but it makes the
transition to the GameBoy Advance nicely. The D-pad is used to select the
current square, pressing A pops up a number selection window, you choose the
number to put in the square, press A again, and the number is placed in the
square. If the number can not be placed in the square the game will let you know
why not and you’ll have to try again with a different number. Of course you can
place a number in a square when it does not conflict with any of the other
numbers in the grid even though it may not be the correct position for that
number. The game will also let you jot down tentative numbers into the corners
of a square as a way to make notes without actually placing a number into the
square. To do so, you hold down the left trigger while selecting the number to
place in the square.

If you want to remove a number from the grid, you simply highlight the square
and press B. This may sound a little complicated but it’s rather easy to get
used to in practice. The only downside to the controls is that the game
sometimes seems to miss the number you selected and tries to put in another
number.